1" Colnago Force fork headset help needed

[slambers3]

Originally Posted by jamesdak

Some pics.....

I'm a steel guy normally so this C.F. stuff is new to me.

I found various pics of these forks online where it looks like there metal or something where he race goes. Others look like carbon only?

Is this maybe just totally missing something which would explain things I guess?

Can you add some context here? Is this the original fork to the bike? If so, did it have a headset and crown race installed before? Can you measure the steerer tube at the crown with calipers?
Several pictures of colnago star forks I’m seeing have an aluminum sleeve for the crown race, but others do not.

[coelacant]

ok, pix explained it, thougth he was doing a steel fork.

[jamesdak]

Originally Posted by slambers3

Can you add some context here? Is this the original fork to the bike? If so, did it have a headset and crown race installed before? Can you measure the steerer tube at the crown with calipers?
Several pictures of colnago star forks I’m seeing have an aluminum sleeve for the crown race, but others do not.

Do not know, this was a used purchase and the person I got it from didn't get around to installing it. My digital calipers are broken so my other ones can't really show precise enough to determine tenths of a mm reliably. Looks to be "a hair" under 26mm. But I've enough 26.4mm races in my stash to try a few and the same for all.

The metal sleeve is what is throwing me also, some pics have it, some don't.

[GregL]

Originally Posted by jamesdak

Do not know, this was a used purchase and the person I got it from didn't get around to installing it. My digital calipers are broken so my other ones can't really show precise enough to determine tenths of a mm reliably. Looks to be "a hair" under 26mm. But I've enough 26.4mm races in my stash to try a few and the same for all.

The metal sleeve is what is throwing me also, some pics have it, some don't.

I wonder if the fork originally had the aluminum sleeve at the crown. Perhaps the sleeve was inadvertently removed when a crown race was removed? That would explain the undersize crown race seat. I believe the crown race seat is supposed to have a diameter of 26.43 mm to ensure a press fit for the race.

Greg

[C40_guy]

Frankly, that steerer tube looks kinda rough, like it's been repaired.

1" Colnago Force and Star forks are tough to find...but...I'd find another one.

Does this one have the correct Colnago expander plug?

[jamesdak]

So, dropped it off for repair this morning. He's going to build the area back up, make sure it's all square, etc. He checked the integrity and sees on issue, just cosmetic damage to what's essentially a gel coat.

Should get 'er back early next week.

More to follow...

[nicrump]

Sorry, that fork is nackered. "gel coat", which isn't used in carbon epoxy btw but rather polyester/FG usually... isn't going to do the trick as it should. It might allow the crown to fit snugly but it doesn't have the compressive strength of a properly compacted/cured carbon epoxy part.